Linked Life Data

12510194

Source:http://linkedlifedata.com/resource/pubmed/id/12510194

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-1-3
pubmed:abstractText
Polarized cells contain numerous membrane domains, but it is unclear how the formation of these domains is coordinated to create a single integrated cell architecture. Genetic screens of Drosophila melanogaster embryos have identified three complexes, each containing one of the PDZ domain proteins--Stardust (Sdt), Bazooka (Baz) and Scribble (Scrib)--that control epithelial polarity and formation of zonula adherens. We find that these complexes can be ordered into a single regulatory hierarchy that is initiated by cell adhesion-dependent recruitment of the Baz complex to the zonula adherens. The Scrib complex represses apical identity along basolateral surfaces by antagonizing Baz-initiated apical polarity. The Sdt-containing Crb complex is recruited apically by the Baz complex to counter antagonistic Scrib activity. Thus, a finely tuned balance between Scrib and Crb complex activity sets the limits of the apical and basolateral membrane domains and positions cell junctions. Our data suggest a model in which the maturation of epithelial cell polarity is driven by integration of the sequential activities of PDZ-based protein complexes.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
1465-7392
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
53-8
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Integrated activity of PDZ protein complexes regulates epithelial polarity.
pubmed:affiliation
Department of Genetics and Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA. bilder@socrates.berkeley.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't